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Header Studs & Gaskets....Need some Help. #2867180 12/31/20 09:13 PM 12/31/20 09:13 PM
Joined: May 2004 Posts: 12,383 Taxes & Virus's R-US, NY Dragula OP I Live Here
Dragula OP I Live Here Joined: May 2004 Posts: 12,383 Taxes & Virus's R-US, NY	So I had new headers made with 2-1/8 to 2-1/4 tubes....With my old 2" headers I ran 3/8 studs in my aluminum heads in all positions. On my new ones, the middle two tubes I can't fit the larger nuts that close.The nuts hit the tubes....Is there any options to still run studs somehow? '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: Header Studs & Gaskets....Need some Help. [Re: Dragula] #2867182 12/31/20 09:18 PM 12/31/20 09:18 PM
Joined: Jan 2005 Posts: 2,540 Milwaukee WI T TRENDZ master
TRENDZ master T Joined: Jan 2005 Posts: 2,540 Milwaukee WI	Arp 12pt nuts? McMaster Carr also has 3/8studs stepped down to 5/16. Or heat the tubes at the nut area and punch in some clearance. "use it 'till it breaks, replace as needed"

Re: Header Studs & Gaskets....Need some Help. [Re: TRENDZ] #2867216 12/31/20 10:19 PM 12/31/20 10:19 PM
Joined: May 2004 Posts: 12,383 Taxes & Virus's R-US, NY Dragula OP I Live Here
Dragula OP I Live Here Joined: May 2004 Posts: 12,383 Taxes & Virus's R-US, NY	I will check out the stepped ones from McMaster Carr....Hopefully those work.... Next question, where fo I get larger header gaskets? The TTI's don't fit, they are D shaped with the arch at the top and outside the flange, the Mancini remflex are too small... '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: Header Studs & Gaskets....Need some Help. [Re: Dragula] #2867230 12/31/20 11:00 PM 12/31/20 11:00 PM
Joined: Aug 2003 Posts: 43,097 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,097 Bend,OR USA	Have you used or tried the Mr. Gasket M.W. header gaskets yet I used the 7/16, 3/8 or the 5/16 wrench size header bolts on my big tube step headers I haven't used the ARP 3/8x16 header studs though Last edited by Cab_Burge; 12/31/20 11:03 PM. Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Header Studs & Gaskets....Need some Help. [Re: Cab_Burge] #2867231 12/31/20 11:05 PM 12/31/20 11:05 PM
Joined: May 2004 Posts: 12,383 Taxes & Virus's R-US, NY Dragula OP I Live Here
Dragula OP I Live Here Joined: May 2004 Posts: 12,383 Taxes & Virus's R-US, NY	No, and Mr Gasket is like low on the list like Walmart. Most items I have purchased from them are just junk. Seems switching to the larger headers is causing all my normal stuff to not fit. '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: Header Studs & Gaskets....Need some Help. [Re: Dragula] #2867241 12/31/20 11:27 PM 12/31/20 11:27 PM
Joined: Aug 2003 Posts: 43,097 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,097 Bend,OR USA	Their, Mr. Gasket, Ultra seal header gaskets work good, not real cheap either How about using the Rem Flex 440-1 copper header gaskets Their oval shape, not round and not rectangular either Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Header Studs & Gaskets....Need some Help. [Re: Cab_Burge] #2867306 01/01/21 09:40 AM 01/01/21 09:40 AM
Joined: Oct 2004 Posts: 3,097 back in Georgia dthemi master
dthemi master Joined: Oct 2004 Posts: 3,097 back in Georgia	Looks late for this, but with them off, put a bolt through, and then progressively beat larger and larger tubes over it till you have room for the nut, The small dimples won't hurt a thing, except the finish lol.

Re: Header Studs & Gaskets....Need some Help. [Re: Dragula] #2867343 01/01/21 10:57 AM 01/01/21 10:57 AM
Joined: Jan 2007 Posts: 8,031 Mt Morris Michigan mopar dave master
mopar dave master Joined: Jan 2007 Posts: 8,031 Mt Morris Michigan	Just use copper high temp RTV. Maddog header suggested it to me a few years ago and have had no issues with it yet. Let it set up over night and your good. http://www.youtube.com/watch?v=aIxaesJ190U http://youtu.be/lCZAaN7fFLg

Re: Header Studs & Gaskets....Need some Help. [Re: dthemi] #2867429 01/01/21 11:57 AM 01/01/21 11:57 AM
Joined: May 2004 Posts: 12,383 Taxes & Virus's R-US, NY Dragula OP I Live Here
Dragula OP I Live Here Joined: May 2004 Posts: 12,383 Taxes & Virus's R-US, NY	Originally Posted by dthemi Looks late for this, but with them off, put a bolt through, and then progressively beat larger and larger tubes over it till you have room for the nut, The small dimples won't hurt a thing, except the finish lol. That has crossed my mind..... '70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft) https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car) https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car) https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9) '66 Barracuda AWB Stretched nose Blown 440 Car in build stage '71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph https://www.youtube.com/watch?v=Znuo3jMUXTk

Re: Header Studs & Gaskets....Need some Help. [Re: Dragula] #2867431 01/01/21 12:03 PM 01/01/21 12:03 PM
Joined: Aug 2003 Posts: 4,670 On the parachute mount N n20mstr master
n20mstr master N Joined: Aug 2003 Posts: 4,670 On the parachute mount	No gaskets needed . Red hi temp silicone and that’s all you need ....BAD A$$ STREET CAR.....

Re: Header Studs & Gaskets....Need some Help. [Re: Dragula] #2867450 01/01/21 12:29 PM 01/01/21 12:29 PM
Joined: Jan 2003 Posts: 5,987 Anoka County, MN L Leigh master
Leigh master L Joined: Jan 2003 Posts: 5,987 Anoka County, MN	Take some hex stock, and turn the hex to the o.d.you need. The oem manifold nuts were like this.

Re: Header Studs & Gaskets....Need some Help. [Re: Leigh] #2867659 01/01/21 04:29 PM 01/01/21 04:29 PM
Joined: Sep 2003 Posts: 19,307 north of coder moparx "Butt Crack Bob"
moparx "Butt Crack Bob" Joined: Sep 2003 Posts: 19,307 north of coder	don't forget to split the flange between the front/rear tubes from the center tubes and drill one hole on each set of flanges a couple of drill sizes over. this allows the individual pipe[s] to move around a little, helping a bunch to keep them sealed to the head. i stole this idea years ago from mr. P-body, and it has done wonders for sealing, using gaskets or just plain hi-temp RTV. works really well on thin flanges to keep them sealed up.

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